EP2350250B2 - Delivery system for co-formulated enzyme and substrate - Google Patents

Delivery system for co-formulated enzyme and substrate Download PDF

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Publication number
EP2350250B2
EP2350250B2 EP09756878.6A EP09756878A EP2350250B2 EP 2350250 B2 EP2350250 B2 EP 2350250B2 EP 09756878 A EP09756878 A EP 09756878A EP 2350250 B2 EP2350250 B2 EP 2350250B2
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Prior art keywords
enzyme
substrate
delivery system
composition
water
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German (de)
English (en)
French (fr)
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EP2350250A1 (en
EP2350250B1 (en
Inventor
Nathaniel T. Becker
Michael Stoner
Mee-Young Yoon
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Danisco US Inc
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Danisco US Inc
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C11D3/38672—Granulated or coated enzymes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • C11D3/38681—Chemically modified or immobilised enzymes

Definitions

  • the invention relates to liquid formulations for co-delivery of enzymes and substrates in which at least one enzyme is encapsulated in a polymeric matrix.
  • the first problem is that optimal effectiveness depends on maintaining the proper enzyme:substrate ratio.
  • the second problem is that enzyme must be physically isolated from its substrate until the reaction is desired.
  • One way to overcome these problems is to package enzyme separately from substrate and combine them at the point of use. However, this approach is inconvenient, complicated, and can result in blending errors at the point of use. It can also be costly since the enzyme often must be formulated with stabilizing substances.
  • Another way to overcome these problems is to provide a blend of dry enzyme and dry substrate, thus achieving physical isolation while maintaining the proper enzyme-to-substrate ratio.
  • a co-formulation approach would be desirable, with enzyme and substrate combined in the same container. This would allow a manufacturer to control the enzyme:substrate ratio, resulting in cost savings on formulation ingredients, and would provide a simple, convenient, and "ready-to-use” product to the consumer. In some cases, combining enzyme and substrate in the same liquid formulation could mitigate toxicity concerns (e.g ., environmental risks posed by laccase mediators could be substantially reduced if they could be handled and transported in the same container as the laccase enzyme itself).
  • Ounichi U.S. Patent No. 4,898,781
  • Aronson U.S. Patent No. 5,281,355
  • the invention provides a liquid delivery system for co-formulated enzyme and substrate, wherein the delivery system is a composition containing an enzyme and a substrate for the enzyme as described in claim 1.
  • the substrate is in a substantially non-aqueous liquid phase (i.e ., less than about 5%, less than about 1%, or less than about 0.5% water) in contact with the polymeric matrix that contains the enzyme, wherein the polymer is not soluble in the liquid phase.
  • the enzyme retains catalytic potential in the polymeric matrix but substantially does not react with the substrate in the composition for at least 10 days at 25°C. After addition of water to the composition, the polymeric matrix is solubilized, releasing the enzyme, permitting catalytic reaction with the substrate to occur.
  • the composition contains two or more enzymes encapsulated in the same polymeric matrix. In some embodiments, the composition contains two or more enzymes encapsulated in separate polymeric matrices. In some embodiments, the composition contains two or more enzymes encapsulated in the same polymeric matrix and at least one enzyme encapsulated in a separate polymeric matrix.
  • the composition contains at least one surfactant.
  • the polymeric matrix is selected from polyvinyl alcohol, methylcellulose, hydroxypropyl methylcellulose, polyvinyl pyrrolidone, guar gum, and derivatives or co-polymers thereof.
  • a suitable polymer for use in the compositions provided herein is one in which an enzyme may be encapsulated and which is not soluble in water.
  • the enzyme-containing polymeric matrix is in the form of particles suspended in a substantially non-aqueous liquid containing the substrate.
  • the particles are held in suspension by a suspending aid.
  • the liquid suspension is in a container that contains an amount of enzyme and substrate sufficient for and/or intended for a single use ( i.e ., a single dose) in an application in which the enzyme/substrate reaction is useful, wherein the container may be opened to dispense the liquid, for example, by opening a cap or lid.
  • the liquid suspension is in a resealable container that contains an amount of enzyme and substrate sufficient for and/or intended for use multiple times ( i.e ., multiple doses), which allows for repeated dispensing of the suspension by opening and closing a container cap, opening and closing a valve or dispensing port, or the like.
  • the enzyme-containing polymeric matrix is in the form of a closed, i.e ., sealed, container, such as a pouch or sachet, and the substrate is in a substantially non-aqueous liquid inside the polymeric container.
  • the substrate is solubilized or dispersed in a substantially non-aqueous liquid phase, which may include a non-aqueous liquid (carrier fluid).
  • carrier fluids include, but are not limited to, glycols, nonionic surfactants, alcohols, polyglycols, acetate esters, or a mixture thereof.
  • a liquid or solid substrate may be combined with one or more carrier fluid and may be either miscible with or suspended in the carrier fluid(s).
  • the carrier fluid contains salt or a pH buffer added to create conditions suitable for increased solubilization of the substrate and/or reduced solubilization of the encapsulating polymer.
  • the carrier fluid is a substrate for the enzyme
  • a propylene glycol diacetate carrier fluid may serve as a substrate for a perhydrolase enzyme encapsulated in a polymeric matrix which is insoluble in propylene glycol diacetate, e.g ., polyvinyl alcohol, methyl cellulose, hydroxypropl methyl cellulose, polyvinyl pyrrolidone).
  • the delivery exhibits increased stability compared to a comparable delivery system lacking the polymer.
  • the enzyme is a perhydrolase and the substrate is an ester substrate, such as, for example, an acetate ester, e.g., propylene glycol diacetate.
  • the ester substrate is propylene glycol diacetate
  • the polymer comprising the perhydrolase enzyme is in the form of particles suspended in the propylene glycol diacetate or in the form of a closed container surrounding the propylene glycol diacetate, i.e., the propylene glycol diacetate is enclosed within the polymeric container.
  • the enzyme is a perhydrolase
  • the substrate is an ester substrate
  • the composition further comprises sodium perborate
  • a peracid is produced after water is added to the composition.
  • the peracid is selected from peracetic acid, pernonanoic acid, perpropionic acid, perbutanoic acid, perpentanoic acid, and perhexanoic acid.
  • the ester substrate is propylene glycol diacetate and the sodium perborate is suspended in the propylene glycol diacetate.
  • the enzyme is a phenol oxidizing enzyme, such as a laccase enzyme
  • the substrate is a laccase mediator, for example, selected from 2, 2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate), syringamide, and syringonitrile.
  • the invention provides a composition for use in an application in which an enzymatic activity is useful, for example, a detergent composition, a textile processing composition, or a personal care composition, wherein the composition contains an enzyme and a substrate for the enzyme, wherein the enzyme is encapsulated in a water-soluble polymeric matrix and wherein the enzyme-containing polymeric matrix is in contact with and insoluble in a substantially non-aqueous liquid solution or suspension containing the substrate, as described herein.
  • a composition for use in an application in which an enzymatic activity is useful for example, a detergent composition, a textile processing composition, or a personal care composition
  • the composition contains an enzyme and a substrate for the enzyme, wherein the enzyme is encapsulated in a water-soluble polymeric matrix and wherein the enzyme-containing polymeric matrix is in contact with and insoluble in a substantially non-aqueous liquid solution or suspension containing the substrate, as described herein.
  • the invention provides a kit containing a delivery system for co-formulated enzyme and substrate as described herein or a composition containing the delivery system, and packaging.
  • the kit further comprises instructions for use in a method, for example, a decontamination method, a cleaning method, a textile processing method, or a personal care method.
  • the kit further comprises instructions for incorporating the delivery system into a formulated composition for use in a method in which catalytic activity of the enzyme upon the substrate is useful, for example, a detergent composition, a textile processing composition, or a personal care composition.
  • the invention provides a method for decontamination, comprising: (a) adding a perhydrolase-containing composition as described herein to water in the presence of a hydrogen peroxide source and mixing, thereby generating an aqueous peracid solution; and (b) contacting an item comprising a contaminant with the solution, thereby reducing the concentration of the contaminant.
  • the contaminant comprises a toxin selected from botulinum toxin, anthracis toxin, ricin, scombroid toxin, ciguatoxin, tetradotoxin, mycotoxins, or a combination thereof.
  • the contaminant comprises a pathogen selected from a bacterium, a virus, a fungus, a parasite, a prion, or a combination thereof.
  • the item is selected from a hard surface, a fabric, a food, a feed, an apparel item, a rug, a carpet, a textile, a medical instrument, and a veterinary instrument.
  • the water is sterilized.
  • contacting the item to be decontaminated is performed at high temperature.
  • the invention provides a method for bleaching a textile, comprising: (a) adding a perhydrolase-containing composition as described herein to water in the presence of a hydrogen peroxide source and mixing, thereby generating an aqueous peracid solution; and (b) contacting a textile with the solution for a length of time and under conditions suitable to permit measurable whitening of the textile, thereby producing a bleached textile.
  • the invention provides a method for cleaning, comprising contacting an article comprising a stain with a detergent composition as described herein in the presence of added water, wherein at least a portion of the stain is removed.
  • the invention provides a method for bleaching a textile, comprising contacting a textile with a phenol oxidizing enzyme (e.g ., laccase) containing composition as described herein in the presence of added water for a length of time and under conditions to permit measurable whitening of the textile, wherein the composition comprises a mediator that effects whitening of the textile, thereby producing a bleached textile.
  • a phenol oxidizing enzyme e.g ., laccase
  • the invention provides a method for changing the color of a textile, comprising contacting a textile with a phenol oxidizing enzyme (e.g ., lactase) containing composition as described herein in the presence of added water for a length of time and under conditions suitable to permit a measurable change of color in the textile, wherein the composition comprises a mediator that effects a change of color in the textile under the conditions used, thereby producing a textile with a change in color.
  • a phenol oxidizing enzyme e.g ., lactase
  • the invention provides a method for hair dyeing, comprising contacting hair with a phenol oxidizing enzyme (e.g ., laccase) containing composition as described herein in the presence of added water for a length of time and under conditions suitable to permit a measurable change of color in the hair, wherein the composition comprises a mediator that effects a change of color in the hair under the conditions used, thereby producing hair with a change in color.
  • a phenol oxidizing enzyme e.g ., laccase
  • the invention provides a method for pulp or paper bleaching and/or delignification, comprising contacting pulp or paper with a phenol oxidizing enzyme (e.g ., laccase) containing composition as described herein in the presence of added water for a length of time and under conditions suitable to permit measurable change of color and/or lignin content of the pulp or paper, wherein the composition comprises a mediator that effects the change of color and/or lignin content, thereby producing pulp or paper with a change of color and/or lignin content.
  • a phenol oxidizing enzyme e.g ., laccase
  • the invention provides a method for enzymatic activation of wood fibers to produce wood composites, comprising contacting wood with a phenol oxidizing enzyme (e.g ., laccase) containing composition as described herein in the presence of added water for a length of time and under conditions suitable to permit measurable change of wood composite yield, wherein the composition comprises a mediator that effects the change of yield of wood composite, thereby producing wood with a change in wood fiber bonding.
  • a phenol oxidizing enzyme e.g ., laccase
  • the invention provides a method for treating waste water, comprising contacting waste water effluent with a phenol oxidizing enzyme (e.g ., laccase) containing composition as described herein in the presence of added water for a length of time and under conditions suitable to permit a measurable decrease in phenol concentration in the waste water, wherein the composition comprises a mediator that effects the decrease in phenol concentration, thereby producing waste water effluent with a decrease in phenol content.
  • a phenol oxidizing enzyme e.g ., laccase
  • compositions described herein contain an enzyme encapsulated in a polymeric matrix containing a water-soluble polymer.
  • the compositions also contain a substrate for the enzyme.
  • the encapsulated enzyme may be suspended in or in the form of a sealed container surrounding a substantially non-aqueous liquid composition comprising, consisting of, or consisting essentially of the substrate, such as, for example, a liquid substrate, substrate solution, or a liquid suspension of solid substrate particles or capsules containing the substrate. Enzyme release from the polymer in which it is encapsulated is triggered by dilution into water.
  • nucleic acids are written left to right in 5' to 3' orientation; amino acid sequences are written left to right in amino to carboxy orientation, respectively.
  • enzyme refers to any protein that catalyzes a chemical reaction.
  • the catalytic function of an enzyme constitutes its "activity” or "enzymatic activity.”
  • An enzyme typically is classified according to the type of catalytic function it carries out, e.g., hydrolysis of peptide bonds.
  • substrate refers to a substance (e.g., a chemical compound) on which an enzyme performs its catalytic activity to generate a product.
  • the terms “purified” and “isolated” refer to the removal of contaminants from a sample and/or to a material (e.g., a protein, nucleic acid, cell, etc.), i.e., a material that is removed from at least one component with which it is naturally associated.
  • a material e.g., a protein, nucleic acid, cell, etc.
  • these terms may refer to a material which is substantially or essentially free from components which normally accompany it as found in its native state, such as, for example, an intact biological system.
  • polynucleotide refers to a polymeric form of nucleotides of any length and any three-dimensional structure and single- or multi-stranded (e.g., single-stranded, double-stranded, triple-helical, etc.), which contain deoxyribonucleotides, ribonucleotides, and/or analogs or modified forms of deoxyribonucleotides or ribonucleotides, including modified nucleotides or bases or their analogs. Because the genetic code is degenerate, more than one codon may be used to encode a particular amino acid, and the present invention encompasses polynucleotides which encode a particular amino acid sequence.
  • any type of modified nucleotide or nucleotide analog may be used, so long as the polynucleotide retains the desired functionality under conditions of use, including modifications that increase nuclease resistance (e.g., deoxy, 2'-O-Me, phosphorothioates, etc.).
  • Labels may also be incorporated for purposes of detection or capture, for example, radioactive or nonradioactive labels or anchors, e.g., biotin.
  • polynucleotide also includes peptide nucleic acids (PNA). Polynucleotides may be naturally occurring or non-naturally occurring.
  • Polynucleotide and “nucleic acid” and “oligonucleotide” are used herein interchangeably.
  • Polynucleotides of the invention may contain RNA, DNA, or both, and/or modified forms and/or analogs thereof.
  • a sequence of nucleotides may be interrupted by non-nucleotide components.
  • One or more phosphodiester linkages may be replaced by alternative linking groups.
  • linking groups include, but are not limited to, embodiments wherein phosphate is replaced by P(O)S ("thioate”), P(S)S ("dithioate”), (O)NR 2 ("amidate"), P(O)R, P(O)OR', CO or CH 2 ("formacetal"), in which each R or R' is independently H or substituted or unsubstituted alkyl (1-20 C) optionally containing an ether (-O-) linkage, aryl, alkenyl, cycloalkyl, cycloalkenyl or araldyl. Not all linkages in a polynucleotide need be identical. Polynucleotides may be linear or circular or comprise a combination of linear and circular portions.
  • polypeptide refers to any composition comprised of amino acids and recognized as a protein by those of skill in the art.
  • the conventional one-letter or three-letter code for amino acid residues is used herein.
  • polypeptide and protein are used interchangeably herein to refer to polymers of amino acids of any length.
  • the polymer may be linear or branched, it may comprise modified amino acids, and it may be interrupted by non-amino acids.
  • the terms also encompass an amino acid polymer that has been modified naturally or by intervention; for example, disulfide bond formation, glycosylation, lipidation, acetylation, phosphorylation, or any other manipulation or modification, such as conjugation with a labeling component.
  • polypeptides containing one or more analogs of an amino acid including, for example, unnatural amino acids, etc.
  • proteins are considered to be "related proteins.”
  • these proteins are derived from a different genus and/or species, including differences between classes of organisms (e.g., a bacterial protein and a fungal protein).
  • related proteins are provided from the same species. Indeed, it is not intended that the processes, methods and/or compositions described herein be limited to related proteins from any particular source(s).
  • the term "related proteins” encompasses tertiary structural homologs and primary sequence homologs. In further embodiments, the term encompasses proteins that are immunologically cross-reactive.
  • a “perhydrolase” refers to an enzyme that is capable of catalyzing a perhydrolysis reaction that results in the production of a sufficiently high amount of peracid suitable for use in an application such as cleaning, bleaching, disinfection, or sterilization.
  • a perhydrolase enzyme used in methods described herein exhibits a high perhydrolysis to hydrolysis ratio.
  • the perhydrolase comprises, consists of, or consists essentially of the Mycobacterium smegmatis perhydrolase amino acid sequence set forth in SEQ ID NO: 1, or a variant or homolog thereof.
  • the perhydrolase enzyme comprises acyl transferase activity and catalyzes an aqueous acyl transfer reaction.
  • perhydrolyzation or “perhydrolyze” or “perhydrolysis” as used herein refer to a reaction wherein a peracid is generated from ester and hydrogen peroxide substrates.
  • the perhydrolyzation reaction is catalyzed with a perhydrolase, e.g., acyl transferase or aryl esterase, enzyme.
  • -OR 2 is -OH.
  • -OR 2 is replaced by -NH 2 .
  • a peracid is produced by perhydrolysis of a carboxylic acid or amide substrate.
  • source of hydrogen peroxide includes hydrogen peroxide as well as the components of a system that can spontaneously or enzymatically produce hydrogen peroxide as a reaction product.
  • perhydrolysis to hydrolysis ratio refers to the ratio of the amount of enzymatically produced peracid to the amount of enzymatically produced acid by a perhydrolase enzyme from an ester substrate under defined conditions and within a defined time.
  • acyl refers to an organic group with the general formula RCO-, derived from an organic acid by removal of the -OH group.
  • acyl group names end with the suffix "-oyl,” e.g., methanoyl chloride, CH 3 CO-Cl, is the acyl chloride formed from methanoic acid, CH 3 CO-OH).
  • acylation refers to a chemical transformation in which one of the substituents of a molecule is substituted by an acyl group, or the process of introduction of an acyl group into a molecule.
  • transferase refers to an enzyme that catalyzes the transfer of a functional group from one substrate to another substrate.
  • the term "enzymatic conversion” refers to the modification of a substrate or intermediate to a product, by contacting the substrate or intermediate with an enzyme.
  • contact is made by directly exposing the substrate or intermediate to the appropriate enzyme.
  • contacting comprises exposing the substrate or intermediate to an organism that expresses and/or excretes the enzyme, and/or metabolizes the desired substrate and/or intermediate to the desired intermediate and/or end-product, respectively.
  • effective amount of enzyme refers to the quantity of enzyme necessary to achieve the activity required in the specific application (e.g., production of peracetic acid by acyl transferase for use in decontamination). Such effective amounts are readily ascertained by one of ordinary skill in the art and are based on many factors, such as the particular enzyme variant used, the specific composition, the method of decontamination, the item to be decontaminated, and the like.
  • the term “stability” in reference to a substance (e.g., an enzyme) or composition refers to its ability to maintain a certain level of functional activity over a period of time under certain environmental conditions. Furthermore, the term “stability” can be used in a number of more specific contexts referring to the particular environmental condition that is of interest. For example, “thermal stability” as used herein refers to the ability of a substance or composition to maintain its function ( i.e., not degrade) at increased temperature.
  • a substantial change in stability is evidenced by at least about a 5% or greater increase or decrease (in most embodiments, it is preferably an increase) in the half-life of the functional activity being assayed, as compared to the activity present in the absence of the selected environmental conditions.
  • chemical stability refers to the stability of the enzyme in the presence of chemicals that adversely affect its activity.
  • chemicals include, but are not limited to hydrogen peroxide, peracids, anionic detergents, cationic detergents, non-ionic detergents, chelants, etc.
  • present invention be limited to any particular chemical stability level nor range of chemical stability.
  • pH stability refers to the ability of a substance (e.g., an enzyme) or composition to function at a particular pH. Stability at various pHs can be measured either by standard procedures known to those in the art and/or by the methods described herein. A substantial change in pH stability is evidenced by at least about 5% or greater increase or decrease (in most embodiments, it is preferably an increase) in the half-life of the functional activity, as compared to the activity at the optimum pH. It is not intended that the present invention be limited to any pH stability level nor pH range.
  • oxidative stability refers to the ability of a substance (e.g., an enzyme) or composition to function under oxidative conditions, e.g., in the presence of an oxidizing chemical.
  • thermal stability refers to the ability of a protein to function at a particular temperature. In general, most enzymes have a finite range of temperatures at which they will function. In addition to enzymes that work in mid-range temperatures (e.g., room temperature), there are enzymes that are capable of working in very high or very low temperatures. Thermal stability can be measured either by known procedures. A substantial change in thermal stability is evidenced by at least about 5% or greater increase or decrease in the half-life of the catalytic activity of a mutant when exposed to a different temperature ( i.e., higher or lower) than optimum temperature for enzymatic activity. However, it is not intended that the processes, methods and/or compositions described herein be limited to any temperature stability level nor temperature range.
  • oxidizing chemical refers to a chemical that has the capability of bleaching.
  • the oxidizing chemical is present at an amount, pH and temperature suitable for bleaching.
  • the term includes, but is not limited to hydrogen peroxide and peracids.
  • contaminant refers to any substance which by its contact or association with another substance, material, or item makes it undesirable, impure, and/or unfit for use.
  • a contaminated item or “item in need of decontamination” refers to any item or thing in contact or associated with a contaminant and/or which needs to be decontaminated. It is not intended that the item be limited to any particular thing or type of item.
  • the item is a hard surface, while in other embodiments, the item is an article of clothing.
  • the item is a textile.
  • the item is used in the medical and/or veterinary fields.
  • the item is a surgical instrument.
  • the item is used in transportation (e.g., roads, runways, railways, trains, cars, planes, ships, etc.).
  • the term is used in reference to food and/or feedstuffs, including but not limited to meat, meat by-products, fish, seafood, vegetables, fruits, dairy products, grains, baking products, silage, hays, forage, etc. Indeed, it is intended that the term encompass any item that is suitable for decontamination using the methods and compositions provided herein.
  • decontamination refers to the removal of substantially all or all contaminants from a contaminated item.
  • decontamination encompasses disinfection, while in other embodiments, the term encompasses sterilization.
  • microbial contamination e.g ., bacterial, fungal, viral, prions, etc.
  • the term "disinfecting” refers to the removal of contaminants from the surfaces, as well as the inhibition or killing of microbes on the surfaces of items. It is not intended that the present invention be limited to any particular surface, item, or contaminant(s) or microbes to be removed.
  • the term "sterilizing” refers to the killing of all microbial organisms on a surface.
  • sporicidal refers to the killing of microbial spores, including but not limited to fungal and bacterial spores.
  • the term encompasses compositions that are effective in preventing germination of spores, as well as those compositions that render spores completely non-viable.
  • bacteria As used herein, the terms “bactericidal,” “fungicidal,” and “viricidal” refer to compositions that kill bacteria, fungi, and viruses, respectively.
  • microbiocidal refers to compositions that inhibit the growth and/or replication of any microorganisms, including but not limited to bacteria, fungi, viruses, protozoa, rickettsia, etc.
  • bacteriostatic As used herein, the terms “bacteriostatic,” “fungistatic,” and “virostatic” refer to compositions that inhibit the growth and/or replication of bacteria, fungi, and viruses, respectively.
  • microbiostatic refers to compositions that inhibit the growth and/or replication of any microorganisms, including but not limited to bacteria, fungi, viruses, protozoa, rickettsia, etc.
  • cleaning composition refers to compositions that find use in the removal of undesired compounds from items to be cleaned, such as fabric, dishes, contact lenses, other solid substrates, hair (shampoos), skin (soaps and creams), teeth (mouthwashes, toothpastes) etc.
  • the term further refers to any composition that is suited for cleaning, bleaching, disinfecting, and/or sterilizing any object and/or surface.
  • detergent compositions e.g., liquid and/or solid laundry detergents and fine fabric detergents; hard surface cleaning formulations, such as for glass, wood, ceramic and metal counter tops and windows; carpet cleaners; oven cleaners; fabric fresheners; fabric softeners; and textile and laundry pre-spotters, as well as dish detergents).
  • the term further encompasses any materials/compounds selected for the particular type of cleaning composition desired and the form of the product (e.g., liquid, gel, granule, or spray composition), as long as the composition is compatible with the acyl transferase, hydrogen peroxide source, PGDA, and any other enzyme(s) or substance used in the composition.
  • cleaning composition includes unless otherwise indicated, granular or powder-form all-purpose or heavy-duty washing agents, especially cleaning detergents; liquid, gel or paste-form all-purpose washing agents, especially the so-called heavy-duty liquid (HDL) types; liquid fine-fabric detergents; hand dishwashing agents or light duty dishwashing agents, especially those of the high-foaming type; machine dishwashing agents, including the various tablet, granular, liquid and rinse-aid types for household and institutional use; liquid cleaning and disinfecting agents, including antibacterial hand-wash types, cleaning bars, mouthwashes, denture cleaners, car or carpet shampoos, bathroom cleaners; hair shampoos and hair-rinses; shower gels and foam baths and metal cleaners; as well as cleaning auxiliaries such as bleach additives and "stain-stick" or pre-treat types.
  • cleaning auxiliaries such as bleach additives and "stain-stick" or pre-treat types.
  • detergent composition and “detergent formulation” are used in reference to mixtures which are intended for use in a wash medium for the cleaning of soiled objects.
  • the term is used in reference to laundering fabrics and/or garments (e.g., “laundry detergents”).
  • laundry detergents e.g., "laundry detergents”
  • the term refers to other detergents, such as those used to clean dishes, cutlery, etc. (e.g., "dishwashing detergents”). It is not intended that the present invention be limited to any particular detergent formulation or composition.
  • perhydrolase enzyme e.g., an acyl transferase
  • the term encompasses detergents that contain surfactants, transferase(s), hydrolytic enzymes, oxido reductases, builders, bleaching agents, bleach activators, bluing agents and fluorescent dyes, caking inhibitors, masking agents, enzyme activators, antioxidants, and solubilizers.
  • the term "enzyme compatible,” when used in the context of cleaning composition materials means that the materials do not reduce the enzymatic activity to such an extent that the relevant enzyme is not effective as desired during normal use situations.
  • the term "derivative" refers to a protein which is derived from a parent protein by addition of one or more amino acids to either or both of the C- and N-terminal end(s), substitution of one or more amino acids at one or a number of different sites in the amino acid sequence, and/or deletion of one or more amino acids at either or both C- and N- terminal end(s) and/or at one or more sites in the amino acid sequence, and/or insertion of one or more amino acids at one or more sites in the amino acid sequence.
  • the preparation of a protein derivative is often achieved by modifying a DNA sequence that encodes a native protein, transformation of the modified DNA sequence into a suitable host, and expression of the modified DNA sequence to produce the derivative protein.
  • variant proteins encompass "variant" proteins.
  • Variant proteins differ from a parent protein and/or from one another by a small number of amino acid residues.
  • the number of different amino acid residues is any of about 1, 2, 3, 4, 5, 10, 20, 25, 30, 35, 40, 45, or 50.
  • variants differ by about 1 to about 10 amino acids.
  • related proteins such as variant proteins, comprise any of at least about 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97%, 98%, 99%, or 99.5% amino acid sequence identity.
  • analogous sequence refers to a polypeptide sequence within a protein that provides a similar function, tertiary structure, and/or conserved residues with respect to a reference protein. For example, in epitope regions that contain an alpha helix or a beta sheet structure, replacement amino acid(s) in an analogous sequence maintain the same structural element.
  • analogous sequences are provided that result in a variant enzyme exhibiting a similar or improved function with respect to the parent protein from which the variant is derived.
  • homologous protein refers to a protein (e.g., a perhydrolase enzyme) that has similar function (e.g ., enzymatic activity) and/or structure as a reference protein (e.g., a perhydrolase enzyme from a different source). Homologs may be from evolutionarily related or unrelated species.
  • a homolog has a quaternary, tertiary and/or primary structure similar to that of a reference protein, thereby potentially allowing for replacement of a segment or fragment in the reference protein with an analogous segment or fragment from the homolog, with reduced disruptiveness of structure and/or function of the reference protein in comparison with replacement of the segment or fragment with a sequence from a non-homologous protein.
  • wild-type As used herein, “wild-type,” “native,” and “naturally-occurring” proteins are those found in nature.
  • wild-type sequence refers to an amino acid or nucleic acid sequence that is found in nature or naturally occurring.
  • a wild-type sequence is the starting point of a protein engineering project, for example, production of variant proteins.
  • bleaching means the process of treating a textile material such as a fiber, yarn, fabric, garment or non-woven material to produce a lighter color in said fiber, yarn, fabric, garment or non-woven material.
  • bleaching means the whitening of the textile by removal, modification or masking of color-causing compounds in cellulosic or other textile materials.
  • bleaching refers to the treatment of a textile for a sufficient length of time and under appropriate pH and temperature conditions to effect a brightening (i.e., whitening) of the textile.
  • Bleaching may be performed using chemical bleaching agent(s) and/or enzymatically generated bleaching agent(s). Examples of suitable bleaching agents include but are not limited to ClO 2 , H 2 O 2 , peracids, NO 2 , etc.
  • bleaching agent encompasses any moiety that is capable of bleaching a textile.
  • a bleach activator may be required.
  • suitable chemical bleaching agents useful in the processes, methods and compositions described herein are sodium peroxide, sodium perborate, potassium permanganate, and peracids.
  • H 2 O 2 may be considered a chemical bleaching agent when it has been generated enzymatically in situ.
  • a "chemical bleaching composition” contains one or more chemical bleaching agent(s).
  • an enzymatic bleaching system or "enzymatic bleaching composition” contains one or more enzyme(s) and substrate(s) capable of enzymatically generating a bleaching agent.
  • an enzymatic bleaching system may contain a perhydrolase enzyme, an ester substrate, and a hydrogen peroxide source, for production of a peracid bleaching agent.
  • esters substrate in reference to an enzymatic bleaching system containing a perhydrolase enzyme refers to a perhydrolase substrate that contains an ester linkage. Esters comprising aliphatic and/or aromatic carboxylic acids and alcohols may be utilized as substrates with perhydrolase enzymes.
  • the ester source is an acetate ester. In some embodiments, the ester source is selected from one or more of propylene glycol diacetate, ethylene glycol diacetate, triacetin, ethyl acetate and tributyrin.
  • the ester source is selected from the esters of one or more of the following acids: formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, caprylic acid, nonanoic acid, decanoic acid, dodecanoic acid, myristic acid, palmitic acid, stearic acid, and oleic acid.
  • hydrogen peroxide source means hydrogen peroxide that is added to a textile treatment bath either from an exogenous (i.e., an external or outside) source or generated in situ by the action of a hydrogen peroxide generating oxidase on a substrate.
  • Hydrogen peroxide source includes hydrogen peroxide as well as the components of a system that can spontaneously or enzymatically produce hydrogen peroxide as a reaction product.
  • hydrogen peroxide generating oxidase means an enzyme that catalyzes an oxidation/reduction reaction involving molecular oxygen (O 2 ) as the electron acceptor. In such a reaction, oxygen is reduced to water (H 2 O) or hydrogen peroxide (H 2 O 2 ).
  • An oxidase suitable for use herein is an oxidase that generates hydrogen peroxide (as opposed to water) on its substrate.
  • An example of a hydrogen peroxide generating oxidase and its substrate suitable for use herein is glucose oxidase and glucose.
  • oxidase enzymes that may be used for generation of hydrogen peroxide include alcohol oxidase, ethylene glycol oxidase, glycerol oxidase, amino acid oxidase, etc.
  • the hydrogen peroxide generating oxidase is a carbohydrate oxidase.
  • textile refers to fibers, yarns, fabrics, garments, and non-wovens.
  • the term encompasses textiles made from natural, synthetic ( e.g., manufactured), and various natural and synthetic blends.
  • textile(s) refers to unprocessed and processed fibers, yarns, woven or knit fabrics, non-wovens, and garments.
  • a textile contains cellulose.
  • textile(s) in need of processing refers to textiles that need to be desized, scoured, bleached, and/or dyed or may be in need of other treatments such as biopolishing, biostonewashing, and/or softening.
  • textiles in need of bleaching refers to textiles that need to be bleached without reference to other possible treatments. These textiles may or may not have been already subjected to other treatments. Similarly, these textiles may or may not need subsequent treatments.
  • Fabric refers to a manufactured assembly of fibers and/or yarns that has substantial surface area in relation to its thickness and sufficient cohesion to give the assembly useful mechanical strength.
  • the terms “purified” and “isolated” refer to the removal of contaminants from a sample and/or to a material (e.g., a protein, nucleic acid, cell, etc.) that is removed from at least one component with which it is naturally associated.
  • a material e.g., a protein, nucleic acid, cell, etc.
  • these terms may refer to a material which is substantially or essentially free from components which normally accompany it as found in its native state, such as, for
  • Size refers to compounds used in the textile industry to improve weaving performance by increasing the abrasion resistance and strength of the yarn. Size is usually made of, for example, starch or starch-like compounds.
  • desize or “desizing,” as used herein, refer to the process of eliminating size, generally starch, from textiles usually prior to applying special finishes, dyes or bleaches.
  • Desizing enzyme(s) refer to enzymes that are used to enzymatically remove the size.
  • Exemplary enzymes are amylases, cellulases and mannanases.
  • scouring means to remove impurities, for example, much of the non-cellulosic compounds (e.g., pectins, proteins, wax, motes, etc.) naturally found in cotton or other textiles.
  • non-cellulosic compounds e.g., pectins, proteins, wax, motes, etc.
  • scouring can remove, in some embodiments, residual materials introduced by manufacturing processes, such as spinning, coning or slashing lubricants.
  • bleaching may be employed to remove impurities from textiles.
  • bioscouring enzyme(s) refers to an enzyme(s) capable of removing at least a portion of the impurities found in cotton or other textiles.
  • motes refers to unwanted impurities, such as cotton seed fragments, leaves, stems and other plant parts, which cling to the fiber even after mechanical ginning process.
  • grey textiles refer to textiles that have not received any bleaching, dyeing or finishing treatment after being produced.
  • any woven or knit fabric off the loom that has not yet been finished (desized, scoured, etc.), bleached, or dyed is termed a greige textile.
  • coloring refers to applying a color, especially by soaking in a coloring solution, to, for example, textiles.
  • non-cotton cellulosic fiber, yarm or fabric means fibers, yarns or fabrics which are comprised primarily of a cellulose based composition other than cotton. Examples of such compositions include linen, ramie, jute, flax, rayon, lyocell, cellulose acetate and other similar compositions which are derived from non-cotton cellulosics.
  • pectate lyase refers to a type of pectinase.
  • pectinase denotes a pectinase enzyme defined according to the art where pectinases are a group of enzymes that cleave glycosidic linkages of pectic substances mainly poly(1,4-alpha-D-galacturonide) and its derivatives (see Sakai et al. (1993) Advances in Applied Microbiology 39:213-294 ).
  • a pectinase useful herein is a pectinase enzyme which catalyzes the random cleavage of alpha-1,4-glycosidic linkages in pectic acid also called polygalacturonic acid by transelimination, such as the enzyme class polygalacturonate lyase (EC 4.2.2.2) (PGL), also known as poly(1,4-alpha-D-galacturonide) lyase, also known as pectate lyase.
  • PGL enzyme class polygalacturonate lyase
  • PGL poly(1,4-alpha-D-galacturonide) lyase
  • pectin denotes pectate, polygalacturonic acid and pectin which may be esterified to a higher or lower degree.
  • cutinase refers to as a plant, bacterial or fungal derived enzyme used in textile processing. Cutinases are lipolytic enzymes capable of hydrolyzing the substrate cutin. Cutinases can breakdown fatty acid esters and other oil-based compositions need to be removed in the processing (e.g., the scouring) of textiles. "Cutinase” means an enzyme that has significant plant cutin hydrolysis activity. Specifically, a cutinase will have hydrolytic activity on the biopolyester polymer cutin found on the leaves of plants. Suitable cutinases may be isolated from many different plant, fungal and bacterial sources.
  • ⁇ -amylase refers to an enzyme that cleaves the ⁇ (1-4)glycosidic linkages of amylose to yield maltose molecules (disaccharides of ⁇ -glucose).
  • Amylases are digestive enzymes found in saliva and are also produced by many plants. Amylases break down long-chain carbohydrates (such as starch) into smaller units.
  • An "oxidative stable" ⁇ -amylase is an ⁇ -amylase that is resistive to degradation by oxidative means, when compared to non-oxidative stable ⁇ -amylase, especially when compared to the non-oxidative stable ⁇ -amylase form which the oxidative stable ⁇ -amylase was derived.
  • protea means a protein or polypeptide domain of a protein or polypeptide derived from a micro-organism, e.g., a fungus, bacterium, or from a plant or animal, and that has the ability to catalyze cleavage of peptide bonds at one or more of various positions of a protein carbohydrate backbone.
  • personal care products means products used in the cleaning, bleaching and/or disinfecting of hair, skin, scalp, and teeth, including, but not limited to shampoos, body lotions, shower gels, topical moisturizers, toothpaste, and/or other topical cleansers. In some embodiments, these products are utilized on humans, while in other embodiments, these products find use with non-human animals ( e.g ., in veterinary applications).
  • a “suspension” or “dispersion” as used herein refers to a two phase system wherein a discontinuous solid phase is dispersed within a continuous liquid phase.
  • a "suspension aid" as used herein refers to a material added to a liquid composition to prevent or reduce sedimentation or floating of suspended particles.
  • Suspension aids typically work by increasing either the viscosity or the yield stress of a carrier liquid. Fluids with a significant yield stress will flow only when stress is applied which is greater than the yield stress, and thus exhibit shear-thinning or thixotropic behavior.
  • Effective suspension agents typically act by forming a reversible network of particles or fibers bridged by weak forces. Examples of suspending agents include, but are not limited to, xanthan gum and microfibrous cellulose, e.g., CELLULON ® (CP Kelco, San Diego, CA).
  • Encapsulated refers to a substance that is contained within a surrounding material. This can include core/shell or matrix morphologies as described in the art ( see , e.g ., " Microencapsulation” Kirk-Othmer Encyclopedia of Chemical Technology, 2005 ).
  • miscible refers to a liquid that is capable of mixing with another liquid, at a specified ratio of the two liquids, without separation into phases.
  • Microx refers to a material in which a substance is enclosed or embedded.
  • biofilm is a collection of microorganisms embedded in a matrix of extracellular polymeric substances and various organic and inorganic compounds. Although some biofilms may contain a single species of microorganism, typically biofilms comprise not only different species of microorganisms but different types of microorganisms, for example algae, protozoa, bacteria and others.
  • the invention provides a liquid delivery system for co-formulated enzyme and substrate in which at least one enzyme is encapsulated in a polymeric matrix and is formulated with a substrate for the enzyme.
  • the substrate is in a substantially non-aqueous liquid phase in contact with the polymeric matrix and in which the polymeric matrix is not soluble.
  • the polymeric matrix containing the enzyme may be suspended in or surround the liquid phase containing the substrate.
  • the enzyme and substrate are not in contact in the delivery system in a configuration in which enzymatic catalysis can occur.
  • catalytic activity occurs.
  • One or multiple enzymes may be included in the composition, with at least one enzyme encapsulated in a polymeric matrix.
  • the delivery system contains two or more enzymes, encapsulated in the same polymeric matrix or in separate polymeric matrices, and the delivery system contains a substrate for at least one of the enzymes.
  • the substrate is solubilized or suspended in a carrier liquid that is substantially non-aqueous and in which the polymeric matrix is not soluble.
  • the carrier liquid and polymer are chosen such that the polymeric matrix remains in a solid form and without swelling during storage. This may be achieved, for example, with low water content, reversible cross-linking, and/or low storage temperature.
  • the liquid phase contains less than about 5%, less than about 1%, or less than about 0.5% water, for example, about 4%, 3%, 2%, 1%, 0.9%, 0.8%, 0.7%, 0.6%, 0.5%, 0.4%, 0.3%, 0.2%, or 0.1% water.
  • the encapsulated enzyme substantially does not react with substrate in the liquid phase during storage of the delivery system.
  • less than about 20%, 10%, 5%, 1%, or 0.5% of substrate in the liquid phase is converted to product during storage for at least about 10 days, 2 weeks, 1 month, 2 months, 3 months, or longer at about 25°C.
  • less than about 20%, 10%, 5%, 1%, or 0.5% of substrate in the liquid phase is converted to product during storage for at least about 1.0 days, 2 weeks, 1 month, 2 months, 3 months, or longer at about 37°C.
  • less than about 20%, 10%, 5%, 1%, or 0.5% of substrate in the liquid phase is converted to product during storage for at least about 10 days, 2 weeks, 1 month, 2 months, 3 months, or longer at about 50°C.
  • an encapsulated enzyme retains at least about 50%, 60%, 70%, 80%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or essentially all of the initial catalytic potential in the polymeric matrix, releasable upon contact with water, but substantially does not react with the substrate in the composition for at least about 10 days, 2 weeks, 1 month, 2 months, 3 months, or longer at 25°C, 37°C, or 50°C.
  • the polymeric matrix comprises, consists of, or consists essentially of a polymer that is insoluble in a carrier fluid containing the substrate and soluble in water.
  • the polymeric matrix comprises, consists of, or consists essentially of polyvinyl alcohol, methylcellulose, hydroxypropyl methylcellulose, polyvinyl pyrrolidone, guar gum, or a derivative or co-polymer thereof, or a mixture thereof.
  • the polymeric matrix contains one or more filler or extender (e.g., starch, sugar, clay, talc, calcium carbonate, titanium dioxide, cellulose fibers), plasticizer (e.g., glycerol, sorbitol, propylene glycol), cosolvent, binder, swelling agent (e.g., polyacrylate, croscarmellose sodium, sodium starch glycolate, low-substituted hydroxypropyl cellulose, galactomannan, Water-Lok, ZapLoc), or release agent.
  • filler or extender e.g., starch, sugar, clay, talc, calcium carbonate, titanium dioxide, cellulose fibers
  • plasticizer e.g., glycerol, sorbitol, propylene glycol
  • cosolvent e.g., glycerol, sorbitol, propylene glycol
  • cosolvent e.g., glycerol, sorbitol, propylene glyco
  • the polymers are negatively-charged polymers, such as hetero-polysaccharides including glucuronide and/or galacturonide residues.
  • Such polysaccharides may for example include material produced by the organisms from which the enzymes themselves have been produced, and may remain as contaminants in the partially purified enzyme preparations even though they do not have, themselves have useful enzymatic activity.
  • such polysaccharides may be added separately, in amounts up to about 1 to 5% by weight or more of the slurry. Such amounts may be comparable with those of the enzymes themselves.
  • the polysaccharides are present (or added) before spray-drying.
  • Other exemplary polymers are arabinogalactans, xylogalalctans, and, generally, acid polysaccharides.
  • the polymeric matrix includes proteins, peptides, or derivatives, thereof. Some or all of the proteins or peptides may be present in a fermentation broth, cell media, or partially-purified protein preparations, and may remain as contaminants in the partially purified enzyme preparations even though they do not have, themselves have useful enzymatic activity. Alternatively or additionally, such polysaccharides may be added separately, in amounts up to about 1 to 5% by weight or more of the slurry. Such amounts may be comparable with those of the enzymes themselves.
  • enzymes are encapsulated in polymers using techniques including, but not limited to, solvent casting, spray drying, lyophilization/freeze-drying, fluid bed spray-coating, fluid-bed agglomeration, spray chilling, wet granulation, drum granulation, high-shear granulation, extrusion, pan coating, coacervation, gelation, and atomization.
  • spray-drying is used.
  • the amount of enzyme encapsulated in the polymeric matrix is less than 50% by weight. In various embodiments, the amount of enzyme encapsulated in the polymeric matrix is about 0.01% to about 50%, about 0.1% to about 25%, about 1% to about 10%, or about 2% to about 5% by weight.
  • the enzyme-containing polymeric matrix is in the form of particles that are suspended in a liquid phase containing the substrate.
  • the particles are about 0.1 to about 1000, about 50 to about 250, about 100 to about 300, about 200 to about 500, about 400 to about 800, or about 600 to about 1000 micrometers in diameter.
  • the polymeric matrix is in the form of a film which is about 5 to about 1000, about 50 to about 100, about 100 to about 200, or about 200 to about 500, or about 500 to about 1000 micrometers in thickness.
  • the enzyme-containing polymeric matrix is in the form of a film forming a sealed container (e.g., a pouch, sachet, or capsule) surrounding a liquid phase that contains the substrate.
  • a sealed container e.g., a pouch, sachet, or capsule
  • the delivery system contains a laccase (a multi-copper oxidase, EC 1.10.3.2, for example, from Cerrena unicolor ) and a mediator (substrate) for the laccase, such as 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), syringonitrile (SN), syringamide (SA), methyl syringate (MS), or 10-carboxypropyl phenothiazine (PTP), or a mediator as described in European Patent No. 1 064 359 , 1 141 321 , or 0 805 465 , U.S. Patent No. 6,329,332 , PCT Application No. 00/05349 , or U.S. Publication No. 2008/0196173 .
  • a laccase a multi-copper oxidase, EC 1.10.3.2, for example, from Cerrena unicolor
  • the laccase enzyme comprises, consists of, or consists essentially of, the amino acid sequence depicted in SEQ ID NO: 1, below, or a variant or homologue, thereof, having at least 70, 75, 80, 85, 86, 87, 88. 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, or even 99% or more sequence identity, or an amino acid sequence as described in PCT Application No. WO2008/076322 , or a variant or homologue thereof having at least 70, 75, 80, 85, 90, 91, 92, 93, 94, 95, 96, 97, 98, or 99, or even 99.5% or more sequence identity.
  • the delivery system contains a perhydrolase enzyme (e.g ., acyl transferase; aryl esterase and a substrate which is an ester substrate or propylene glycol diacetate (PGDA).
  • a perhydrolase enzyme e.g ., acyl transferase; aryl esterase and a substrate which is an ester substrate or propylene glycol diacetate (PGDA).
  • the perhydrolase enzyme is a naturally occurring M. smegmatis perhydrolase enzyme.
  • the perhydrolase enzyme comprises, consists of, or consists essentially of the amino acid sequence set forth in SEQ ID NO: 2 or a variant or homologue thereof.
  • the perhydrolase enzyme comprises, consists of, or consists essentially of an amino acid sequence that is at least about 80%, 85%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or even 99.5%, or more, identical to the amino acid sequence set forth in SEQ ID NO: 2.
  • M. smegmatis perhydrolase The amino acid sequence of M. smegmatis perhydrolase is shown below:
  • the perhydrolase enzyme comprises one or more substitutions at one or more amino acid positions equivalent to position(s) in the M. smegmatis perhydrolase amino acid sequence set forth in SEQ ID NO: 2.
  • the perhydrolase enzyme comprises any one or any combination of substitutions of amino acids selected from M1, K3, R4, 15, L6, C7, D10, S11, L12, T13, W14, W16, G15, V17, P18, V19, D21, G22, A23, P24, T25, E26, R27, F28, A29, P30, D31, V32, R33, W34, T35, G36, L38, Q40, Q41, D45, L42, G43, A44, F46, E47, V48, I49, E50, E51, G52, L53, S54, A55, R56, T57, T58, N59, I60, D61, D62, P63, T64, D65, P66,
  • the perhydrolase enzyme comprises one or more of the following substitutions at one or more amino acid positions equivalent to position(s) in the M. smegmatis perhydrolase amino acid sequence set forth in SEQ ID NO: 2: L12C, Q, or G; T25S, G, or P; L53H, Q, G, or S; S54V, L A, P, T, or R; A55G or T; R67T, Q, N, G, E, L, or F; K97R; V125S, G, R, A, or P; F154Y; F196G.
  • the perhydrolase enzyme comprises a combination of amino acid substitutions at amino acid positions equivalent to amino acid positions in the M. smegmatis perhydrolase amino acid sequence set forth in SEQ ID NO:2: L12I+S54V; L12M+S54T; L12T+S54V; L12Q+T25S+S54V; L53H+S54V; S54P+V125R; S54V+V125G; S54V+F196G; S54V+K97R+V125G; or A55G+R67T+K97R+V125G.
  • the enzyme is a perhydrolase and the delivery system contains an ester substrate or ester substrate mixture, for example, an acetate ester, e.g ., propylene glycol diacetate (PGDA), ethyl acetate, butyl acetate, hexyl acetate, octyl acetate, ethyl propionate, butyl propionate, hexyl propionate, isoamyl acetate, citronellyl acetate, citronellyl propionate, dodecyl acetate, Neodol 23-3 acetate, Neodol 23-9 acetate, ethylene glycol diacetate, triacetin, tributyrin, ethyl methoxyacetate, linalyl acetate, ethyl butyrate, ethyl isobutyrate, ethyl-2-methyl butyrate, ethyl isovalerate,
  • the delivery system includes a substrate for an encapsulated enzyme in a carrier liquid in which the polymeric matrix (in which the enzyme is encapsulated) is substantially insoluble.
  • carrier liquids include glycols, nonionic surfactants, alcohols, polyglycols, and acetate esters.
  • the carrier liquid is, itself, a substrate for the enzyme.
  • the delivery system includes one or more surfactants, i.e ., a nonionic, anionic, cationic, ampholytic, zwitterionic, or semi-polar nonionic surfactant, or a mixture, thereof.
  • the delivery system includes one or more of: a suspension aid, a chelating agent, a stabilizing agent, an emulsifier, a buffering agent, and/or a mixture thereof.
  • compositions containing enzyme/substrate co-delivery systems as described herein.
  • Exemplary compositions include: a cleaning composition, a disinfecting composition, a decontamination composition, a textile processing composition, a bleaching composition, a textile dyeing composition, a personal care composition, a hair dyeing composition, a pulp or paper processing composition, a wood composite producing composition, a waste water processing composition, a baking composition, a brewing composition, an animal feed composition, a starch processing composition, and/or an ethanol fermenting composition.
  • the delivery system may be stored in the composition or may be mixed into the composition at the point of use.
  • a detergent composition for use in a cleaning application.
  • a detergent composition may contain one or more detergent ingredients selected from surfactants, builder, bleaches, bleach precursors, enzyme stabilizers, complexing agents, chelating agents, foam regulators, corrosion inhibitors, anti-electrostatic agents, dyes, perfumes, bactericides, fungicides, and activators.
  • the delivery system may be stored in the detergent composition or may be mixed into the composition at the point of use.
  • the invention provides a method for cleaning, comprising contacting an article containing a stain with a detergent composition comprising an enzyme/substrate co-delivery system as described herein in the presence of water, wherein at least a portion of the stain is removed.
  • the invention provides a method for inhibiting transfer of dye from a dyed fabric to another fabric during washing, comprising an enzyme/substrate co-delivery system as described herein in the presence of water, wherein the delivery system contains an enzyme capable of bleaching, for example, a phenol oxidizing enzyme, such as a laccase, or a peroxidase, wherein at least a portion of colored substances leached from dyed and/or soiled fabric are bleached, thereby preventing redeposition of the colored substances to the other fabric in the wash.
  • an enzyme capable of bleaching for example, a phenol oxidizing enzyme, such as a laccase, or a peroxidase
  • the invention provides a method for bleaching of a textile, comprising contacting a textile with an enzyme/substrate co-delivery system containing at least one enzyme and substrate capable of bleaching a textile, for example, a perhydrolase and substrates for producing a peracid or a phenol oxidizing enzyme, e.g., a laccase, and a mediator capable of producing a bleaching effect, in the presence of water, for a length of time and under conditions suitable to permit measurable whitening of the textile, thereby producing a bleached textile.
  • an enzyme/substrate co-delivery system containing at least one enzyme and substrate capable of bleaching a textile, for example, a perhydrolase and substrates for producing a peracid or a phenol oxidizing enzyme, e.g., a laccase, and a mediator capable of producing a bleaching effect, in the presence of water, for a length of time and under conditions suitable to permit measurable whitening of the textile, thereby producing a bleach
  • the invention provides a method for changing the color of a textile (e.g., dyeing the textile), comprising contacting a textile with an enzyme/substrate co-delivery system containing an enzyme and substrate capable of changing the color of a textile, for example, a phenol oxidizing enzyme, e.g., a laccase, and a mediator capable of effecting a color change, in the presence of water, for a length of time and under conditions suitable to permit a measurable change of color in the textile, thereby producing a textile with a change in color.
  • an enzyme/substrate co-delivery system containing an enzyme and substrate capable of changing the color of a textile, for example, a phenol oxidizing enzyme, e.g., a laccase, and a mediator capable of effecting a color change, in the presence of water, for a length of time and under conditions suitable to permit a measurable change of color in the textile, thereby producing a textile with a change in color.
  • the invention provides methods for combined pretreatment of textiles in a single process, wherein the enzyme/substrate co-delivery system comprises at least two textile processing enzymes.
  • a combined process for desizing, scouring, and bleaching includes a perhydrolase enzyme and substrate(s) (e.g., ester substrate and hydrogen peroxide source) as described herein and amylase and pectinase enzymes.
  • a combined scouring and bleaching process includes a perhydrolase enzyme and substrate(s) as described herein and a pectinase enzyme.
  • a combined desizing and bleaching process includes a perhydrolase enzyme and substrate(s) as described herein and an amylase enzyme.
  • a pectinase enzyme in the combined textile pretreatment methods described herein may be used by itself or in combination with one or more other enzymes such as protease, lipase, cellulase, cutinase, and/or hemicellulase.
  • the enzyme/substrate co-delivery systems of the present invention can be used in a range of methods for decontaminating, disinfecting, and/or sanitizing items.
  • the method for decontamination comprises: (a) providing an enzyme/substrate co-delivery system as described herein comprising an enzyme with perhydrolase activity encapsulated in a water-soluble polymer, wherein said activity comprises a perhydrolysis to hydrolysis ratio of at least 2:1; a hydrogen peroxide source; and an ester substrate; and (b) adding the composition to water and mixing under conditions and for a length of time sufficient to solubilize the polymeric matrix and to generate an aqueous solution of at least about 0.16% peracetic acid by weight, e.g., at least about 20 minutes, and a pH less than about 9.0; and (c) exposing an item comprising a contaminant to the solution.
  • the hydrogen peroxide source is a hydrogen peroxide generating compound, for example, selected from sodium percarbonate, sodium perborate, and urea hydrogen peroxide.
  • the hydrogen peroxide source is an enzymatic system, such as a hydrogen peroxide generating oxidase and its substrate, e.g., glucose oxidase and glucose.
  • the hydrogen peroxide generating oxidase may be encapsulated in a polymeric matrix (the same as or separate from the polymeric matrix in which the perhydrolase enzyme is encapsulated) or solubilized or suspended in the liquid phase in the delivery system.
  • the substrate for the hydrogen peroxide generating oxidase may be encapsulated in a polymeric matrix (the same as or separate from the polymeric matrix in which the perhydrolase enzyme is encapsulated) or solubilized or suspended in the liquid phase in the delivery system.
  • the step of exposing the item to the peracid solution may be performed over a wide range of time scales. For example, in certain sanitizing procedures exposure times as short as about 30 seconds, 1 minute, 5 minutes or 10 minutes may be sufficient. However, in other applications (e.g., removal of biofilms), it may be necessary to expose the item for considerably longer periods of time, such as about 30 minutes, 1 hour, 6 hours, 12 hours, 24 hours, or even longer, in order to achieve adequate level of decontamination.
  • the temperature of the peracid solution during the exposure step may be adjusted depending on the particular type of contaminant.
  • the exposure temperature is the ambient temperature at which the solution is prepared, i.e., typically about 18-25°C.
  • higher temperatures may be used to facilitate the decontamination process. Generally, higher temperatures will accelerate the reactivity of the peracid solution, thereby accelerating the decontamination process.
  • the exposure step may be carried out with the peracid solution at about 30°C, 37°C, 45°C, 50°C, 60°C, 75°C, 90°C, or even higher.
  • the enzyme-containing polymeric matrix is in the form of a water soluble container in which the substrates are enclosed in a liquid phase and the container is added to the water.
  • the methods of decontamination are useful against a wide range of contaminants including toxins selected from the group consisting of botulinum toxin, anthracis toxin, ricin, scombroid toxin, ciguatoxin, tetrodotoxin, mycotoxins, and any combination thereof; and pathogens selected from the group consisting of bacteria, viruses, fungi, parasites, prions, and any combination thereof.
  • toxins selected from the group consisting of botulinum toxin, anthracis toxin, ricin, scombroid toxin, ciguatoxin, tetrodotoxin, mycotoxins, and any combination thereof
  • pathogens selected from the group consisting of bacteria, viruses, fungi, parasites, prions, and any combination thereof.
  • the methods disclosed herein may be used for decontamination of materials contaminated with materials including but not limited to toxic chemicals, mustard, VX, B. anthracis spores, Y .
  • the at least one pathogen is selected from Bacillus spp., B. anthracis, Clostridium spp., C. botulinum, C.
  • perfringens Listeria spp., Pseudomonas spp., Staphylococcus spp., Streptococcus spp., Salmonella spp., Shigella spp., E. coli, Yersinia spp., Y. pestis, Francisella spp., F. tularensis, Camplyobacter ssp., Vibrio spp., Brucella spp., Cryptosporidium spp., Giardia spp., Cyclospora spp., and Trichinella spp.
  • the peracid solutions generated using the delivery systems described herein and the methods of their use are effective at decontaminating biofilms.
  • One of the characterizing features of biofilms is that the microorganisms therein act cooperatively or synergistically. Empirically it has been found that microorganisms living in a biofilm are better protected from biocides than microorganisms living outside a biofilm. Thus, removal of pathogenic biofilms represents a particularly difficult problem in decontaminating and/or sanitizing equipment.
  • the stable compositions made be used to generate a peracid solution are useful to remove biofilms, including those formed by one or more pathogenic bacteria selected from the group consisting of: Bacillus spp., B. anthracis, Clostridium spp., C. botulinum, C. perfringens, Listeria spp., Pseudomonas spp., Staphylococcus spp., Streptococcus spp., Salmonella spp., Shigella ssp., E. coli, Yersinia spp., Y. pestis, Francisella spp., F.
  • pathogenic bacteria selected from the group consisting of: Bacillus spp., B. anthracis, Clostridium spp., C. botulinum, C. perfringens, Listeria spp., Pseudomonas spp., Staphylococcus spp., Strept
  • a peracid solution made by the methods of the present invention may be used to decontaminate biofilms selected from group consisting of: Pseudomonas aeruginosa, Staphylococcus aureus (SRWC-10943), Listeria monocytogenes (ATCC 19112), and any combination thereof.
  • pathogenic biofilms comprising bacterial cultures of Pseudomonas spp., Staphylococcus spp., and/or Listeria spp., contaminating stainless steel equipment can be substantially removed (i.e., ⁇ 500-1000-fold reduction) by exposure to a 0.16% by weight PAA solution (generated from the perhydrolase containing enzyme/substrate co-delivery system) at 45°C for 45 minutes.
  • PAA solution generated from the perhydrolase containing enzyme/substrate co-delivery system
  • the methods of decontamination using the perhydrolase containing delivery systems described herein are useful for sanitizing/decontaminating a wide range of contaminated items including hard surfaces, fabrics, food, feed, apparel, rugs, carpets, textiles, medical instruments, veterinary instruments, for example, stainless steel items and equipment, including large reactors, used in pharmaceutical and biotechnology processes.
  • peracid solutions generated enzymatically using the delivery systems described herein are particularly well-suited for cleaning stainless steel items and equipment because the ratio of peracid to corresponding acid generated in aqueous solution is much higher than found in commercial solutions.
  • a peracetic acid (PAA) solution generated using the stable composition of S54V variant of MsAcT, percarbonate, and propylene glycol diacetate (PGDA) will have a ratio of PAA to acetic acid of approximately 10:1.
  • Commercial PAA solutions typically have more acetic acid than PAA and may even have the reversed ratio (1:10).
  • peracid solutions generated using the stable compositions of the present invention may be used to sanitize stainless steel items and equipment, including large reactors, used in pharmaceutical and biotechnology processes.
  • the peracid solutions may be used to sanitize stainless steel items and equipment in a single-step, without the need for any further treatment of the steel with a passivating agent.
  • the delivery systems described herein may be used in decontamination of food and/or feed, including but not limited to vegetables, fruits, and other food and/or feed items. Indeed, it is contemplated that the present invention will find use in the surface cleaning of fruits, vegetables, eggs, meats, etc. Indeed, it is intended that the present invention will find use in the food and/or feed industries to remove contaminants from various food and/or feed items. In some embodiments, methods for food and/or feed decontamination set forth by the Food and Drug Administration and/or other food safety entities, as known to those of skill in the art find use with the present invention.
  • the item in need of decontamination is selected from hard surfaces, fabrics, food, feed, apparel, rugs, carpets, textiles, medical instruments, and veterinary instruments.
  • the food is selected from fruits, vegetables, fish, seafood, and meat.
  • the hard surfaces are selected from household surfaces and industrial surfaces.
  • the household surfaces are selected from kitchen countertops, sinks, cupboards, cutting boards, tables, shelving, food preparation storage areas, bathroom fixtures, floors, ceilings, walls, and bedroom areas.
  • the industrial surfaces are selected from food processing areas, feed processing areas, tables, shelving, floors, ceilings, walls, sinks, cutting boards, airplanes, automobiles, trains, and boats.
  • a kit provides an enzyme/substrate co-delivery system as described herein, with instructions for use in an application, including any of the methods described herein (for example, a cleaning method or a textile processing method), in which enzyme activity upon dilution in water, is useful.
  • Suitable packaging is provided.
  • packing refers to a solid matrix or material customarily used in a system and capable of holding within fixed limits components of a kit as described herein, e.g., an enzyme/substrate co-delivery system.
  • Instructions may be provided in printed form or in the form of an electronic medium such as a floppy disc, CD, or DVD, or in the form of a website address where such instructions may be obtained.
  • Enzyme-containing polyvinyl alcohol (PVA) matrices were prepared using a solvent casting method. One part of liquid enzyme concentrate (about 35 mg/ml enzyme) was added to nine parts of a 10% polymer solution and mixed thoroughly. This solution was spread onto a glass sheet and allowed to dry at ambient temperature. The dried polymer films contained approximately 3.5 mass % enzyme, and had thickness of about 50-100 ⁇ m. These films were cut into 4 mm diameter circular disks for subsequent testing.
  • the PVA polymers used in this experiment were two different DuPont commercial grades: Elvanol 51-05 (88% hydrolysis, 500 nominal degree of polymerization) and Elvanol 71-30 (98% hydrolysis, 1500 nominal degree of polymerization).
  • PGDA propylene glycol diacetate
  • the pNB rate assay was performed as follows:
  • a "no enzyme" control included all of the above components except the PVA perhydrolase disks.
  • Circular disks 5/32 in. in diameter were cut from PVA film (Elvanol 51-05) that was about 50-100 ⁇ m in thickness and contained encapsulated perhydrolase and ⁇ -amylase enzymes ("PVA perhydrolase/ ⁇ -amylase disks").
  • the enzymes were encapsulated in the polymeric matrix as described above, but with 9 parts 10% polymer solution to 1 part each of perhydrolase concentrate and amylase concentrate.
  • the resulting polymer film was approximately 2.5 mass % of each enzyme.
  • Laccase enzyme from Cerrena unicolor was encapsulated in Elvanol 52-22 polyvinyl alcohol (88% hydrolysis, 1300 nominal degree of polymerization), which dissolves in water at room temperature.
  • the polymeric film contained 1.5 mass-% laccase, 8.5 mass-% non-enzyme ultrafiltration concentrate solids from fermentation, and 90 mass-% polymer.
  • Circular disks 5/32 in. in diameter were cut from the PVA film containing encapsulated laccase enzyme ("PVA laccase disks"). The enzyme was encapsulated in the polymer as described in Example 1.
  • Enzyme leaching from the PVA laccase disks was assessed using three different laccase mediators as substrates for the enzyme.
  • Two PVA laccase disks were inserted into a glass vial with a solution of 1 ml of PGDA containing 1% by weight ABTS (diammonium 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) and incubated for 10 days at room temperature (vial "2" in Figure 2 ).
  • the same preparation without PVA laccase disks was prepared as a negative control (vial "1" in Figure 2 ).
  • two PVA laccase disks were dissolved in 100 ⁇ l of deionized water and then added to a vial containing 1 ml PGDA with 1% ABTS as a positive control (vial "3" in Figure 2 ). Color changes of these solutions were monitored as an indication of enzyme leaching.
  • PVA laccase disks Two PVA laccase disks were inserted into a glass vial with a solution of 1 ml of PGDA containing 1% by weight syringamide (3,5-dimethoxy-4-hydroxybenzamide; "SA") and incubated for 10 days at room temperature ("4" in Figure 3 ). The same preparation without PVA laccase disks was prepared as a negative control ("5" in Figure 3 ). In addition, two PVA laccase disks were dissolved in 100 ⁇ l of deionized water and then added to a vial containing 1 ml PGDA with 1% SA as a positive control ("6" in Figure 3 ).
  • SA syringamide
  • PVA laccase disks Two PVA laccase disks were inserted into a glass vial with a solution of 1 ml of PGDA containing 5% by weight syringonitrile (3,5-dimethoxy-4-hydroxybenzonitrile; "SN") and incubated for 10 days at room temperature ("8" in Figure 4 ). The same preparation without PVA laccase disks was prepared as a negative control ("7" in Figure 4 ). In addition, two PVA laccase disks were dissolved in 100 ⁇ l of deionized water and then added to a vial containing 1 ml PGDA with 1% SN as a positive control ("9" in Figure 4 ).
  • Desized sulfur bottom/indigo dyed denim and desized 100% indigo dyed denim were treated in a Unimac (50lb lab scale) tumbling washer with 1g/L INDIAGE ® 44L cellulase at 55°C and pH 4.8 for 60 minutes at a 10:1 liquor ratio followed by two rinses and then dried.
  • Total color difference ⁇ E ⁇ L 2 + ⁇ a 2 + ⁇ b 2 , (where ⁇ L, ⁇ a, ⁇ b, are differences in CIE L*, CIE a*, and CIE b* values respectively, before and after the laccase bleaching).
  • the results are shown in Table 5 and Figure 6 .
  • the denim swatches treated with preparation (B) (laccase + SN co-delivery system) were significantly bleached.
  • the color of the denim swatches treated with preparation (D) (laccase + ABTS co-delivery system) dyed into a light purple color.
  • This example demonstrates how encapsulation of enzyme within a polymer matrix can be used to stabilize a single-bottle enzymatic bleaching or disinfection system.
  • the single-bottle system is designed to produce peracetic acid upon dilution with water. Its components are: sodium perborate, propylene glycol diacetate (PGDA) and arylesterase (ArE) and a nonaqueous carrier fluid.
  • PGDA propylene glycol diacetate
  • ArE arylesterase
  • the carrier fluid was an alcohol ethoxylate nonionic surfactant (Novel 1012-6 from Sasol Co.; Hamburg, DE).
  • the ArE enzyme component was added to the system in two ways: (1) directly from a liquid enzyme concentrate, and (2) encapsulated in polymer as a spray dried powder.
  • the polymer was hydroxypropyl methylcellulose (HPMC, Methocel E5 Premium LV from Dow Chemical Co., Midland, MI, USA).
  • HPMC hydroxypropyl methylcellulose
  • the spray drying was conducted such that the dried powder was 75% (by mass) HPMC.

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